CP-Carrillo BCR1220-030 Bullet Series Forged Piston 4.155 in. Bore Dome +0.030 Over

The CP-Carrillo BCR1220-030 is a high-performance forged piston from the Bullet Series, designed for demanding V8 engine builds targeting Ford, Chevrolet, and Dodge applications. This individual piston features a dome-top design with two valve reliefs and a bore size of 4.155 in. (105.537mm) — a +0.030" oversize — making it ideal for engines that have been bored for additional displacement or to clean up cylinder walls.

Manufactured from 2618 forged aluminum alloy, the BCR1220-030 delivers the strength and heat resistance demanded by high-horsepower, high-RPM applications. CP-Carrillo applies the same rigorous manufacturing process used in their premium CP Pistons line, with tight tolerances, FEA-designed forgings, and ISO 9000 certified quality control.

Key Features:

• Bore: 4.155 in. (105.537mm) — +0.030" oversize
• Stroke: 3.875 in.
• Rod Length: 6.000 in.
• Compression Height: 1.062 in.
• Dome Height: 0.275 in.
• Piston Head Volume: -8.00cc
• Wrist Pin Diameter: 0.927 in. — press-fit or floating compatible
• Piston Ring Thickness: 1.20mm x 1.20mm x 3.00mm (file-fit)
• Material: 2618 forged aluminum for superior strength and durability
• Balanced to ±1 gram for precision rotation
• Dual forced pin oilers and contact reduction grooves
• Accumulator groove for ring seal improvement
• Chromoly wrist pins with wire lock retainers included
• Piston rings included
• Sold individually

The Bullet Series is CP-Carrillo's accessible performance line, combining application-specific forgings with the precision manufacturing that has made CP-Carrillo a trusted name in professional motorsports. Rigorous quality control and ISO 9000 certification ensure each piston meets exacting standards.